Herbs and other dietary supplements: healthcare professionals' knowledge, attitudes, and practices.

CONTEXT: Herbs and other dietary supplements (H/DS) are frequently used by the public. They have significant health implications, yet little is known about health professionals' knowledge, attitudes, or clinical practices related to H/DS. DESIGN: Cross-sectional survey of clinicians prior to participation in an Internet-based educational program on herbs and dietary supplements. PARTICIPANTS: The 537 participants included 111 physicians (MD), 30 advanced practice nurses (RN), 46 pharmacists (PharmD), and 350 dietitians (RD). In addition to demographic information, participants were asked about their knowledge, attitudes, and practices related to H/DS. RESULTS: Most participants were involved in direct patient care (85%), in practice or on faculty (84%), and from outside our local institutions (76%); 66% reported receiving professional education about H/DS in the past year. There were statistically significant differences between professional groups, with RDs scoring better than others, but even their average scores were less than 60% of possible. The average score on knowledge questions was 10/20; the average confidence score was 4 out of 10 possible, and the average communication score was 1.4 out of 4 possible. Most respondents knew the most common clinical uses of echinacea and St. John's wort, and felt confident that they knew more than their colleagues about H/DS. Key deficits were in knowledge about adverse effects, confidence in reporting side effects, routinely communicating with patients about H/DS, and recording H/DS information in the medical record. CONCLUSIONS: Despite significant interest and previous training in H/DS, these clinicians had substantial room for improvement in knowledge, attitudes, and clinical practices about H/DS. Educational interventions and institutional policies are needed to improve the quality of patient care regarding H/DS, and such interventions should be rigorously evaluated to ensure that continuous improvements occur.

Randomized trial of an internet curriculum on herbs and other dietary supplements for health care professionals.

PURPOSE: Herbs and dietary supplements are widely used, and there is an urgent need to educate health professionals about their risks and benefits. The Internet provides an innovative way of educating busy health professionals. This study assessed the impact of an Internet-based curriculum on health professionals' knowledge, confidence, and clinical practices related to herbs and dietary supplements. METHOD: The study was a randomized crossover trial involving physicians, pharmacists, advanced practice nurses, and dietitians. Participants were invited by e-mail and randomly assigned to immediate intervention versus waiting-list groups (n = 537). The curriculum lasted ten weeks and consisted of 20 case-based modules, each involving one multiple-choice or true-or-false question and its answer, links to reliable Internet sources of additional information, and a moderated listserv discussion group. Participants were surveyed about their knowledge, confidence, and communication related to herbs and dietary supplements on enrollment, after the immediate intervention group had completed the curriculum, and after the waiting-list group completed the curriculum. RESULTS: Baseline scores for knowledge, confidence, and communication were similar in the two groups. At the first follow-up, there was greater improvement in scores for all three areas in the immediate intervention group than in the waiting-list group (improvement for knowledge, 3.0 versus 1.4; confidence, 2.6 versus 0.6; communication, 0.21 versus -0.1, p <.01 for all comparisons). After all participants had received the curriculum, scores for both groups were significantly better than at baseline and similar to one another. CONCLUSION: Internet-based education about herbs and dietary supplements for diverse health professionals is feasible and results in significant and sustained improvements in knowledge, confidence, and communication practices.